/Engine/Plugins/FX/Niagara/Source/NiagaraEditor/Public/NiagaraParameterMapHistory.h
Find a variable by both name and type.
int32 FindVariable ( const [FName](API\Runtime\Core\UObject\FName) & VariableName, const [FNiagaraTypeDefinition](API\Plugins\Niagara\FNiagaraTypeDefinition) & Type ) const